Firearms



' June 26, 1934.

S. L. STETSON FIREARM Filed Aug. 1'7, 1933 i5 7 J U .5

7 INVENTOR A TTORNE r Patented June .26, 1934 STATES PATENT OFFICE 5Claims.

My invention is a buffer for shotguns to absorb the recoil. It will befound useful on any gun but more so on all light guns like 28410 andthose that shoot heavy loads.

5 An object of my invention is to provide an improved buffer and one inwhich the length of the stock is not changed with changes in theadjustment of the tension of the spring means that takes up the recoil.

The figure of the drawing is a cross section of my buffer and a portionof the gun stock to which it is shown attached.

My invention consists of an aluminum lead plate #2 with an inner tube #6attached thereto also check rods #44 attached thereto overlapping checknuts #55 thereon and the adjusting screw #3 that extends throughheadplate #2 and butt plate #1 for easy and quick adjustment of recoil.The adjusting screw #3 acts directly on the tension spring #8 and doesnot alter the length of stock. Innertube #6 telescopes into outer tube#7 and is held in its proper position by the check rods #44 passingthrough check plate #9 and held in position by the overlapping nuts #55thereon. The check plate #9 is rigid on outer tube #7 and rests upagainst the end of stock when tube #7 is inserted in hole in stock. Thespring #8 fits into the tubes #6 and 7 between a bearing on the end oftube #7 and a washer 11 that fits on a shoulder on the end of adjustingscrew #3 which passes through a hole in the butt plate #1 thereby beingconvenient for quick adjusting of spring #8 to conform to recoil.

A red rubber jacket 12 turns over the edges of headplate #2 about A" andis held in place by the butt plate #1 screwing up tightly thereon. It isabout 2" wide over all and overlaps the stock about 1". The butt plate#1 is red fiber and the red rubber jacket gives the gun a very niceappearance. The adjusting screw #3 has a vent hole through its entirelength to relieve the air pressure which acts more or less. #14 on thedrawing is the space between #1 and #2 for turn- .45.. over of jacket12. The vent hole in the adjusting screw is indicated by 10, and #11 isa washer on end of adjusting screw.

Operation At the moment of discharge the recoil starts the gun backwardsagainst your shoulder and at this point the tube 7 and check plate 9start sliding on tube 6 and check rods 44 respectively. This causes thecoil spring #8 to contract and increase in tension as plate 9 movesalong toward head plate #2 and thereby absorbs the recoil. The tensionspring then returns the device to its normal position or where itstarted from.

The butt plate #1 is naturally the same shape as butt end of the gunstock. The head plate therefore is same shape as butt plate but 9-smaller both ways to allow for turn in of jacket to make it conform tosize of butt plate. Said head plate is made of aluminum with a raisedbeveled portion on side next to gun butt to bring the check rods atright angles, also a lug for attaching tube #6 to said plate, the lug isbored and tapped to receive adjusting screw #3 which acts directly onthe tension spring #8 and is accessible through butt plate.

I claim 1. A buifer for attachment to a gun stock comprising a checkplate adapted for attachment to the butt end of the gun stock, saidcheck plate having apertures adapted to align with correspondingdepressions in said gun stock, a buffer spring in one of saiddepressions, bearing means for one end of said spring mechanicallyassociated with said check plate whereby pressure from said stock willbe transmitted from said check plate to said one end of said springthrough said bearing means, a head plate having rigid guide postsslidably extending through certain of said apertures in said check plateand into the corresponding depressions in said gun stock, means in saidlatter depressions limiting movement of said posts in one direction,means adjustable with respect to said head plate cooperating with theother end of said spring and coaxial therewith whereby recoiltransmitted to said gun stock will be taken up by said spring.

2. A buffer as claimed in claim 1 in which said head plate is providedwith a butt plate constructed and arranged to afford ready access tosaid means adjustable with respect to said head plate.

3. A buffer as claimed in claim 1 in which the said bearing meansincludes a tubular member secured to said check plate at one end and amember secured internally of said tubular mem- 100 her at its other end,inclosing said spring and forming a thrust bearing for the firstmentioned end of said spring.

4. A bufier as set forth in claim 1 in which said head plate and saidcheck plate are each 105 provided with a tube secured theretorespectively and projecting forwardly, the tube of said head platetelescoping in said check plate tube and housing said bufier spring andsaid latter tube forming the mechanical association between said 110bearing means and said check plate as and for the purpose set forth.

5. A bufier for attachment to a gun stock comprising a check plateadapted for attachment to the butt end of said gun stock, saidcheckplate having apertures adapted to align with correspondingdepressions in the gun stock, a tubular member having a bearing means atone end and secured at the other end in one of said apertures of saidcheck plate, a head plate having rigid guide posts slidably extendingthrough certain of said apertures in said check plate and into thecorresponding depressions in said gun stock, means in said latterdepressions limiting move- SAMUEL LESTER STETSON.

CERTIFICATE OF CORRECTION.

Patent No. 1,964,649. June SAMUEL LESTER STETSON.

It is hereby certified iiiat error appears in the printed specificatio;above numbered patent requiring correction as follcwsz Page 1, line 1"lead" read head; and that the said Letters Patent should be read withcorrection therein that the same may conform to the record of the easePatent Office.

Signed and sealed this llth day of September, A. D. 1934.

Leslie Frazer (Seal) Acting Commissioner of.

CERTIFICATE OF CORRECTION.

Patent No. 1,964,649. June 26, 1934.

SAMUEL LESTER STETSON.

It is hereby certified that error appears in the printed specificationof the above numbered patent requiring correction as follows: Page 1,line 13, for "lead" read head; and that the said Letters Patent shouldbe read with this correction therein that the same may conform to therecord at the ease in the. Patent Office.

Signed and sealed this 11th day of September, A. D. 1934.

Leslie Frazer (Seal) Acting, Commissioner of. Patents,

